openflow for wireless mesh networks dely, p., kassler, a. ; bayer, n., karlstad univ., karlstad,...
TRANSCRIPT
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OpenFlow for Wireless Mesh Networks
Dely, P. , Kassler, A. ; Bayer, N., Karlstad Univ., Karlstad, Sweden , Computer Communications and
Networks (ICCCN), 2011 Proceedings of 20th International Conference on
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Outline
• Introduction– Routing protocols in Wireless Mash Networks.– Motivation
• System architecture• Evaluation
– Pure test– Seamless handover
• Conclusion• Reference
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Routing protocols in Wireless Mash Networks
• Ad hoc On-Demand Distance Vector (AODV)
• Optimized Link State Routing Protocol (OLSR)– Nodes advertise information only about links
with neighbors.
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Motivation• There are many traditional routing
protocols in WMS, but they are not flexible enough for some requirement such as load-balancing.
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System architecture
Architecture of an OpenFlow Mesh Node
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System architecture
Architecture of the core network
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Evaluation-Forwarding performance
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Total control traffic caused by OLSR and OpenFlow
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Evaluation-seamless handover
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TCP throughput from the core-network to the station during two handovers
(after 15 and 30 sec.)
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Conclusion
• The architecture combines the benefits of OpenFlow (flexible packet forwarding) and WMNs (self-configuration and error-resilience)
• Handover with OpenFlow can provide a more efficient way for access point choosing.
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Reference
• OLSR, [http://en.wikipedia.org/wiki/Optimized_Link_State_Routing_Protocol]
• OLSR,[http://www.soi.wide.ad.jp/class/20060035/slides/04/index_43.html]